1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
2. Department of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore
3. Department of Physics, Hangzhou Normal University, No. 2318, Yuhangtang Rd, Hangzhou, Zhejiang 311121, China
4. Pillar of Engineering Product Development (EPD), Singapore University of Technology and Design, 8 Somapah Road, 487372, Singapore
5. Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
6. National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial
Park, Suzhou 215123, China